﻿// EXP0203.cpp : 读程序写结果。
//

#include <iostream>

int main()
{
    

	unsigned u = 10, u2 = 42;
    std::cout << u2 - u << std::endl;       //32
    std::cout << u - u2 << std::endl;       //4294967264
    int i = 10, i2 = 42;
    std::cout << i2 - i << std::endl;       //32
    std::cout << i - i2 << std::endl;       //-32
    std::cout << i - u << std::endl;        //0
    std::cout << u - i << std::endl;        //0
}

